French phrase
Est-ce que ~ est étanche ?
Meaning
Is ___ airtight?
When to use it
Asks whether a container keeps air or liquid from escaping. Used to check the seal on a container.
Example dialogue
Est-ce que le bocal est étanche ?
Is the jar airtight?
Oui, il a un joint en caoutchouc.
Yes, it has a rubber gasket.